What Causes Elevated Liver Enzymes?

Hi I have AST levalsof 88 and ALT levals of 98 .I also have hade pain in my right upper quarderant for about 8 to 12 months .i have had a sono with normal findings and an x-ray with normal findings my pain is worse after a meal as soon as i am done eating i bloat and and not feel well. the pain is all the time just worse when i eat . i do not drink alachol never have . and no hepitatis .